Abstract
An extracellular alkaline serine protease (called DHAP), produced by a Bacillus pumilus strain, demonstrates significant dehairing function. This protease is purified by hydrophobic interaction chromatography, ion exchange, and gel filtration. DHAP had a pI of 9.0 and a molecular weight of approximately 32,000 Dalton. It shows maximal activity at pH 10 and with a temperature of 55°C; the enzyme activity can be completely inhibited by phenylmethylsulfonyl fluoride (PMSF) and diisopropyl fluorophosphates (DFP). The first 20 amino acid residues of the purified DHAP have been determined with a sequence of AQTVPYGIPQIKAPAVHAQG. Alignment of this sequence with other alkaline protease demonstrates its high homology with protease from another B. pumilus strain.
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Received: 17 April 2002 / Accepted: 24 May 2002
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Huang, Q., Peng, Y., Li, X. et al. Purification and Characterization of an Extracellular Alkaline Serine Protease with Dehairing Function from Bacillus pumilus . Curr Microbiol 46, 0169–0173 (2003). https://doi.org/10.1007/s00284-002-3850-2
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DOI: https://doi.org/10.1007/s00284-002-3850-2